These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor...
Where ocean currents were strong, ancient rudist “recliners” lay unattached on...
Rudist clams are mollusks that went extinct about 65 million years ago. They were...
The Methane Circus
Students will describe the overall events that occurred during the Cambrian...
Mon, 11/30/2009 - 18:31